Views: 2 Author: Site Editor Publish Time: 2025-08-06 Origin: Site
The chemical makeup of these materials differs significantly, as summarized in the table below:
| Element | 9Cr18 Stainless Steel (%) | GCr15 Bearing Steel (%) |
|---|---|---|
| Carbon (C) | 0.95-1.20 | 0.95–1.10 |
| Chromium (Cr) | 16.00–18.00 | 1.35–1.65 |
| Silicon (Si) | ≤1.00 | 0.15–0.35 |
| Manganese (Mn) | ≤0.80 | 0.2 5–0.40 |
| Sulfur (S) | ≤0.030 | ≤0.025 |
| Phosphorus (P) | ≤0.035 | ≤0.025 |
| Nickel (Ni) | ≤0.60 (optional) |
| Nickel (Ni) | ≤0.60 (optional) | – |
| Molybdenum (Mo) | ≤0.75 (optional) | – |
| Key Traits | High chromium for corrosion resistance | High carbon for enhanced wear performance |
Differences in properties affect performance in applications:
| Property | 9Cr18 Stainless Steel Balls | GCr15 Steel Balls |
|---|---|---|
| Hardness (HRC) | 55–60 after heat treatment, offering high wear resistance | 60–64 post-quenching and tempering, optimized for load-bearing |
